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   RE: [xml-dev] Challenge

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Hi Mark,

The good point about your post and the challenge is that it made me
re-discover XForm. IN fact I re-discovered why I need XForm instead of
simply the XML document, an XSLT stylesheet and a bit of prototype based
programming (ref: http://en.wikipedia.org/wiki/Prototype_based). In fact the
problem occurred when I tried to bind a particular element from the source
XML document to an XHTML element; I am not able with XSLT 1.0 to obtain the
XPath expression of a node. So it seems that I need to do it by hand and
define it somewhere. This is precisely the kind of functionality offered by
XForms :-)

By the way, I may be wrong but in the XForms example you provided could the
binding be as follows: 
        <xforms:submission id="submit" 
     <xforms:instance id="theChallenge">
          <demo xmlns="">
      <xforms:bind id="version" nodeset="//version" constraint=". = '1.0'"/>
      <xforms:bind id="name" nodeset="//author/name"/>
      <xforms:bind id="email" nodeset="//author/email"/>
      <xforms:bind id="description" nodeset="//description"/>

In which each XML element is referred by an XPath 1.0 expression and I need
to include a "bind" attribute to each XHTML element used to input data. For
instance, the XHTML element used to input the <version> element will include
the "bind" attribute as follow:
 <input bind="version" type="text" name="version" size="20"/>
 (no <label> element, this is an XHTML element)
In this last case, the "bind" is redundant with the "name" attribute and I
guess that the "bind" attribute can be omitted and replaced by the
functionally equivalent "name" attribute. Anyway, it could be useful to
trace back the binding "explicitely".

I can write this whole XForms definition differently as follow:
        <xforms:submission id="submit" 
     <xforms:instance src=http://myDomain.com/theChallenge.xml"; />
     <input ref="//version" type="text" name="version" size="20"/>

Didier PH Martin


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